· PDF fileWhen operating some leveling systems manually or operating the room extensions, the pump will turn off and back ... MANUAL JACK RETRACTION Section. The system

OPERATOR’S MANUAL

ML46430/MP04.337008JUN10

Touch Panel Leveling ControlBI-AXIS Hydraulic Leveling

FEATURING:

HWH CORPORATION(On I-80, Exit 267 South)

2096 Moscow Road | Moscow, Iowa 52760Ph: 800/321-3494 (or) 563/724-3396 | Fax: 563/724-3408

www.hwh.com

725 SERIES LEVELING SYSTEMHWH COMPUTER-CONTROLLED

R

Straight-Acting Jacks

AP46429

R

RETRACT

EXTEND

HWH COMPUTERIZED LEVELING

SECURELY BEFORE REMOVING TIRES OR CRAWLING UNDER VEHICLE.UNDERSTAND OPERATOR’S MANUAL BEFORE USING. BLOCK FRAME AND TIRES

CANCEL

STOREAUTO

AUTOLEVEL

TRAVEL

BRAKE

MODE

WARNING!

EXCESSSLOPE

NOT INPARK/

R

MANUAL

RETRACT

EXTEND

CORPORATIONWH H

R

OPERATING MANUAL

MP14.000417APR12

WARNING !

READ THE ENTIRE OPERATOR’S MANUAL BEFORE OPERATING.

BLOCK FRAME AND TIRES SECURELY BEFORE CRAWLING UNDER VEHICLE. DO NOT USE LEVELING JACKSOR AIR SUSPENSION TO SUPPORT VEHICLE WHILE UNDER VEHICLE OR CHANGING TIRES. VEHICLE MAYDROP AND/OR MOVE FORWARD OR BACKWARD WITHOUT WARNING CAUSING INJURY OR DEATH.

KEEP ALL PEOPLE CLEAR OF VEHICLE WHILE LEVELING SYSTEM, ROOM EXTENSIONS AND OTHER MOVABLE MECHANISMS ARE BEING OPERATED.

NEVER PLACE HANDS OR OTHER PARTS OF THE BODY NEAR HYDRAULIC LEAKS. OIL MAY PENETRATE SKIN CAUSING INJURY OR DEATH.

WEAR SAFETY GLASSES WHEN INSPECTING OR SERVICING THE SYSTEM TO PROTECT EYES FROM DIRT,METAL CHIPS, OIL LEAKS, ETC. FOLLOW ALL OTHER APPLICABLE SHOP SAFETY PRACTICES.

IMPORTANT: IF COACH IS EQUIPPED WITH A ROOM EXTENSION, READ ROOM EXTENSION SECTION BEFOREOPERATING LEVELING SYSTEM.

HOW TO OBTAIN WARRANTY SERVICE

THIS IS NOT TO BE INTERPRETED AS A STATEMENT OF WARRANTYHWH CORPORATION strives to maintain the highest level ofcustomer satisfaction. Therefore, if you discover a defect or

problem, please do the following:

(563) 724-3396 OR (800) 321-3494. Give your name and

coach was purchased, or the date of system installation,

Notify the dealership where you purchased the vehicle or had the leveling system installed. Dealership management people are in the best position to resolve the problem quickly. If the dealer has difficulty solvingthe problem, he should immediately contact the CustomerService Department, at HWH CORPORATION.

If your dealer cannot or will not solve the problem,notify the Customer Service Department:HWH CORPORATION 2096 Moscow Rd. Moscow IA. 52760

address, coach manufacturer and model year, date the

SECOND:

FIRST:

authorization of an independent service facility, to bedefective part, either by appointment at the factory or by theCORPORATION will authorize repair or replacement of thedetermine whether or not your claim is valid. If it is, HWHHWH CORPORATION personnel will contact you toduring business hours (8:00 a.m. till 5:00 p.m. c.s.t.).description of the problem, and where you can be reached

determined by HWH CORPORATION. All warranty repairs must be performed by an independent service facility authorized by HWH CORPORATION, or at the HWH CORPORATION factory, unless prior written approval has been obtained from proper HWH CORPORATION personnel.

MP24.315017FEB11

CONTROL IDENTIFICATION

725 SERIES LEVELING SYSTEM

COMPUTER-CONTROL

RETRACT

EXTEND


SECURELY BEFORE REMOVING TIRES OR CRAWLING UNDER VEHICLE.UNDERSTAND OPERATOR’S MANUAL BEFORE USING. BLOCK FRAME AND TIRES

"EXCESS SLOPE"Indicator light

"AUTO LEVEL"

AUTO LEVEL/STORE"CANCEL" Button

"NOT IN PARK"Indicator light

Indicator light

"TRAVEL MODE"Indicator light

Indicator light

AUTO LEVEL

"AUTO STORE"Button

STORE

Button

RAISE LEFT SIDEManual button

LOWER LEFT SIDEManual button

STOREAUTO

CANCEL

AUTOLEVEL

TRAVEL

BRAKE

MODE

WARNING!

EXCESSSLOPE

NOT INPARK/

R

LOWER FRONTManual button

RAISE FRONTManual button

JACK DOWNIndicator light

RAISE RIGHT SIDEManual button

LOWER RIGHT SIDEManual button

LEVEL SENSINGIndicator light (4) yellow

RAISE REARManual button

LOWER REARManual button

MANUAL

RETRACT

EXTEND

(4) red

CONTROL FUNCTIONS

the automatic store function.STORE INDICATOR LIGHT:

during the automatic leveling function.AUTO LEVEL INDICATOR LIGHT:

INDICATOR LIGHTS

start the automatic leveling function.

They are functional only when the ignition is in the "ON" yellow level indicators are jacks down WARNING lights.

will retract their respective jack pairs to lower the vehicle.

extend their respective jack pairs to lift the vehicle.

RETRACT BUTTONS (DOWN ARROWS):

EXTEND BUTTONS (UP ARROWS):

CONTROL BUTTONS

WARNING LIGHTS:

four jacks at the same time."AUTO STORE" BUTTON:

"AUTO LEVEL" BUTTON:

any leveling system operation."CANCEL" BUTTON:

This light will flash during

This light will flash

The four red lights surrounding the

Push this button any time to

These buttons will

Push this button to retract all

Push this button to stop

These buttons

The four yellow indicating lights are level sensing indicators. When a yellow light is on, it indicates that its side, end, or corner of the vehicle is low. No more than two lights should be on at the same time.When all four yellow LEVEL lights are out, the vehicle is

It will be on when any one or more jacks are extended

This is a jacks down warning. It will sound if the

This indicator light will be on

This indicator will light

This indicator will light when

INDICATOR LIGHTS (CONTINUED)

light mounted in the dash separate from the touch panel. MASTER "JACKS DOWN" WARNING LIGHT:

when the ignition is on, when the jacks are retracted and

when the hand/auto brake is not set and the "AUTO LEVEL"

the leveling system cannot level the vehicle.

"TRAVEL MODE" LIGHT:

master "JACKS DOWN" warning light is on.

and the ignition is "ON".

there are no red WARNING lights on.

BUZZER:

button is being pushed.

"NOT IN PARK/BRAKE" LIGHT:

"EXCESS SLOPE" LIGHT:

LEVELING LIGHTS:

This is a

or "ACC" position, the system is on, and the jacks areextended 1/4 to 1/2 inch.

level.

MP25.999514MAR12

CONTROL IDENTIFICATION

PUMP RUN TIME

SYSTEM VARIATIONS FOR PUMP RUN TIME

Contact HWH corporation to get specific information about the system in this vehicle.

No matter what HWH system is on the vehicle, the pump should not be ran for more than four minutes (3" motors) or six minutes (3.7" or 4.5" motors) without allowing the pump motor to cool for thirty minutes. Continuous operation of the pump motor without allowing the motor to cool can damage the pump motor.

Some HWH systems are equipped with a lighted reset switch. If the processor turns the pump off because the run time has been exceeded, the light in the reset switch will turn on. The

With some systems, when the processor has turned the pump off because the run time has been exceeded, power to the HWH system must be turned off and back on before the system will operate. With motorized vehicles, turn theignition off and back on. With non-motorized vehicles, turn the master power switch for the HWH system off and back

DO NOT continue without allowing the pump motor to cool for thirty minutes.

When operating some leveling systems manually or operating the room extensions, the pump will turn off and back on while pushing the control button when the pump run time has been exceeded.the pump motor to cool for thirty minutes.

Some systems can be turned back on immediately after the processor turns the pump off.back on or run the pump without allowing the pump motor to cool for thirty minutes.

Some systems with rooms run the rooms separate from the system processor. These systems do not monitor pump run time when operating the rooms.pump motor to cool for thirty minutes.

The HWH systems with a computer processor monitor the pump run time and will turn the pump off if the run time exceeds a specified time. This time can vary with different systems. Due to available electronics or system design, the pump run time programs will also vary. Leveling systems and room extensions that are not controlled by a system processor have no pump run time protection.thirty minutes.

Pump motors used with HWH leveling systems and room extension systems come in 3 different diameters; 3", 3.7" and 4.5". Contact the vehicle manufacturer or HWH for help with identifying the motor size.runs for more than four minutes with a 3" motor; or six minutes with a 3.7" or 4.5" motor that the motor is allowed to cool for thirty minutes before continuing. Continuous operation of the pump motor without allowing the motor

PUMP RUN TIME

It is important that any time the pump

to cool can damage the motor.

DO NOT run the pump more than four or six minutes without allowing the pump motor to cool for

DO NOT run the pump more than four or six minutes without allowing the

DO NOT turn the system

DO NOT continue without allowing

on.

system will not operate until the reset switch is pushed.DO NOT continue without allowing the pump motor to cool for thirty minutes.

LIGHTED RESET SWITCH

For cold weather information see "COLD WEATHER OPERATIONS" below.

COLD WEATHER OPERATIONS

HWH leveling and room extension systems are designed to function in cold weather down to 0 degrees Fahrenheit. Below freezing (32 degrees Fahrenheit) the jacks or rooms will operate slower than usual.

For operation in temperatures dropping below -20 degrees Fahrenheit, it is necessary that the system is equipped with oil designed for extreme cold weather application such as a synthetic oil. (Contact HWH for recommendations.)

DO NOT run the pump motor continuously.

Continuous operation of the pump with slow moving jacks or rooms in cold weather, without allowing the pump motor tocool will cause the pump motor to burn up and damage the pump assembly.

It is important that any time the pump runs for more than four minutes

continuing. Continuous operation of the pump motor without allowing the motor to cool can damage the motor. with a 3" motor; or six minutes with a 3.7" or 4.5" motor that the motor is allowed to cool for thirty minutes before

OPERATING PROCEDURES

MP34.022906AUG13

GENERAL INSTRUCTIONS

PREPARATION FOR TRAVEL

If parking on soft ground or asphalt paving, a wood block orpad should be placed under each jack.

Any time a hydraulic leveling process is interrupted, it is recommended to retract the jacks according to the JACK RETRACTION Section and then restart the leveling process.

If the hand / auto brake is not set when the "AUTO LEVEL" button is pressed, the "NOT IN PARK/BRAKE" light will come on. When the "AUTO LEVEL" button is released the

If the jacks are retracted but a red "WARNING" light is lit the system needs to be serviced.

If the jacks cannot be retracted according to the JACKRETRACTION Section, retract the jacks according to theMANUAL JACK RETRACTION Section. The system should then be checked.

EXTENDED CAN CAUSE SEVERE DAMAGE TO THE

MOVING THE VEHICLE WITH THE LEVELING JACKSVEHICLE IS EQUIPPED WITH STRAIGHT-ACTING JACKS.THE GROUND OR IN THE EXTEND POSITION. THIS THE LEVELING JACKS ARE STILL IN CONTACT WITH

DO NOT MOVE THE VEHICLE WHILE WARNING:

Maintain adequate clearance in all directions for vehicle, roomextensions, awnings, doors, steps, etc. Vehicle may move inany direction due to jacks extending or retracting, settling of the jacks or the vehicle, equipment malfunction, etc..

Any room extension or generator slide should be fully

DO NOT MOVE THE VEHICLE IF ONEOR MORE JACKS ARE EXTENDED TO THE GROUND.WARNING:

"NOT IN PARK/BRAKE" light will go out. The Automatic

retracted before traveling.

JACKS AND OR THE VEHICLE AND CREATE A DRIVING HAZARD. DO NOT RELY SOLELY UPON WARNING

Leveling function will not start.

Press the "CANCEL" button or turn the ignition switch"OFF" at any time to stop the operation of the system.

fail to retract completely, extend the jacks back downto the ground then retract the jacks again.

NOTE: If the vehicle is parked or stored with the jacksextended for an extended period of time and the jacks

LIGHTS. IT IS THE OPERATOR’S RESPONSIBILITY TO CHECK THAT ALL JACKS ARE FULLY RETRACTED INTO THE STORE/TRAVEL POSITION.

IMPORTANT: Before traveling, the red jack warning lights must be off and the "TRAVEL MODE" light must be on. If lights are not correct for travel, retract jack as described in the JACK RETRACTION Section.

MP34.275221FEB18



AUTOMATIC HYDRAULIC LEVELING

the vehicle ignition is in the ON or ACC. position the leveling system touch panel can be on anytime NOTE: One or two yellow level indicator lights on

the automatic leveling function."CANCEL" button on the HWH touch panel will stoppushing the "AUTO LEVEL", "AUTO STORE" or the IMPORTANT: During the Automatic Leveling procedures,

The AUTO LEVEL light will start to flash. 3. Press the "AUTO LEVEL" button one time.

and place a pad under each jack if the ground will not 2. At this time, the operator may want to check the jacks

engine off. Turn the ignition to the "ACCESSORY" position.parking the vehicle and set parking brake. Turn the coach 1. Place transmission in the recommended position for

and the park brake is set.

support the vehicle.

5. Turn the ignition switch to the "OFF" position.

The slight lift experienced during the stabilizing procedure normally is not sufficient to cause a level issue for the motor home. However, a feature of the single step leveling system is the manual leveling buttons will function anytime the ignition is in the ON or ACC. position and the park brake is set. If desired, the operator can use the UP ARROWS (extend jacks) that correspond to any lit yellow level indicator light to "bump" the vehicle up slightly to turn that yellow indicator light off.

AUTO LEVEL SEQUENCE: During the automatic leveling sequence, after the system has extended the appropriate jacks to level the vehicle and has turned the yellow level indicator lights off, the system will then stabilize the vehicle.

The stabilize procedure is a specific sequence where thecomputer checks the jack pressure switches. If the switchis on, the jack is stabilizing the vehicle. If the switch is noton, the computer turns the pump and valve on for that jackuntil the pressure switch turns on.

The sequence starts with the right rear jack. If the pressureswitch is not on, the system will extend the jack as necessary.If the switch is on (or when it comes on) the system will checkthe left rear jack pressure switch, extending the jack if necessaryIf the left rear switch is on (or when it comes on), the system will recheck the right rear (extending if necessary) then recheck the left rear (extending if necessary). After checking and rechecking both rear jacks, the system then checks the front jacks. The system checks both front jacks at the same time. If either pressure switch is not on, the system will turn the pump on and open the valves for both front jacks. Whenboth front pressure switches are on, the system turns the pump and front valves off.

In the event the jacks areunable to level the coach, the "EXCESS SLOPE" light willEXCESS SLOPE SITUATION:

Stabilize sequence information: The stabilize sequenceis part of the auto level sequence. Each jack has a pressure switch. The switch will turn on when the jack extends to the ground and lifts the vehicle slightly. Jacks that have lifted the vehicle for leveling should have pressure switches that are on.

STORE" button will function if the "EXCESS SLOPE" light is

with the "EXCESS SLOPE light on. The "AUTO LEVEL"on. The manual UP and DOWN arrow buttons will function

off, leaving the "EXCESS SLOPE" light on. The "EXCESS

MANUAL HYDRAULIC OPERATION section. The "AUTO

come on. Excess slope is when one or two jacks extend fully without turning the yellow level light out. The system will not stabilize the vehicle if the "EXCESS SLOPE" light comes on. One or more jacks may not be extended. The system will shut

SLOPE" light will remain on for two minutes if the ignition

Retract the jacks and move the vehicle to a more level positionor level the vehicle as close as possible according to the

is in the "ON" or "ACC" position.

button will NOT function if the "EXCESS SLOPE" light is on.

MP34.306208JUN10

WARNING:

JACK RETRACTION (HWH TOUCH PANEL CONTROLS)

THE OPERATOR MUST BE SURE THATTHERE ARE NO OBJECTS UNDER THE VEHICLE AND THATALL PEOPLE ARE CLEAR OF THE VEHICLE.

3. If jacks cannot be retracted by the above procedure seeMANUAL JACK RETRACTION Section.

WARNING: DO NOT MOVE THE VEHICLE WHILE THELEVELING JACKS ARE STILL IN CONTACT WITH THE GROUNDOR IN THE EXTEND POSITION. THIS VEHICLE IS EQUIPPEDWITH STRAIGHT-ACTING JACKS. MOVING THE VEHICLEWITH THE LEVELING JACKS EXTENDED CAN CAUSESEVERE DAMAGE TO THE JACKS AND OR THE VEHICLE ANDCREATE A DRIVING HAZARD. DO NOT RELY SOLELY UPONWARNING LIGHTS. IT IS THE OPERATOR’S RESPONSIBILITY TOCHECK THAT ALL JACKS ARE FULLY RETRACTED INTO

2. The vehicle can be moved as soon as the red warning lights are out, the jacks are in the STORE/TRAVEL positionand the green "TRAVEL" light is on.

THE STORE/TRAVEL POSITION.



NOTE: When traveling thermal expansion may cause a jack to extend slightly. When the "AUTO STORE" button has been used to retract the jacks, the system will automatically retract any jack that extends due to thermal expansion.

IMPORTANT: If a red warning light and buzzer come onwhile traveling, the jacks should be checked as soon asa safe parking location is found.

NOTE: When the jacks are stored with the ignition inthe ON position, the warning buzzer will sound untilthe jacks have retracted to the STORE position. Ifdesired, the jacks can be stored with the ignition keyin the accessory position. This will eliminate the warning buzzer while the jacks are retracting.

1. Press the "AUTO STORE" button. The store indicator light will flash. The front jacks will retract for 5 seconds before the rear jacks will begin to retract. As each jack retracts, its red WARNING light will go out. The system will automatically shut down 1 minute after the four individual red "WARNING" lights are out. If any one red "WARNING light does not go out, the system will continue to store for fifty minutes, then shut down regardless of the "WARNING" lights condition.

the automatic store function."CANCEL" button on the HWH touch panel will stoppushing the "AUTO LEVEL", "AUTO STORE" or the IMPORTANT: During the Automatic Store procedures,

IMPORTANT: If power to the system is interrupted afterstarting a store procedure the store procedure should bereinitiated and the jacks should be completely retractedwith all four red WARNING lights out prior to traveling.


MP34.333408JUN10

IMPORTANT: Do not continue to push an EXTEND

MANUAL HYDRAULIC OPERATION

1. Place transmission in the recommended position for parking

2. Place pads under the jack feet if the ground will not supportthe vehicle on the jacks.

3. The vehicle may be leveled using the manual EXTEND (UP ARROW) buttons on the right half of the panel. If a yellow LEVEL SENSING light is on, that side, end or corner of the

Jacks will extend (or retract) in pairs to raise (or lower) a side or end of the vehicle.

button for more than ten (10) seconds after that pair of

4. When leveling is completed, turn the ignition switch to the "OFF" position.

the vehicle, and set the parking brake. Turn the ignition to the"ACCESSORY" position.

jacks are fully extended.

vehicle is low. It is best to level the vehicle side to side first, if needed, before front to rear.

Any jack not used for leveling can be extended to the ground. This provides additional stability against wind and activity in the vehicle. Jacks used to stabilize the vehicle after leveling is complete should lift the vehicle slightly after touching the ground.

MANUAL JACK RETRACTION

large and / or small valves.

direction may damage the valve.on the valve. Pushing the release cam in the wrong release cam. The cam might be rotated in any direction Large and small valves may be equipped with a valve

than 2 full turns may damage the valve.release nut turned approximately 2 full turns. MoreLarge valves with valve release nuts will need the

the two center valves.3. Retract the front jacks by slowly opening

WARNING:

2. Allow clearance for the vehicle to lower.

The solenoid valves are located on the power unit/valve1. Locate the manual valve release on each solenoid valve.

RELEASE IS OPERATED.OR BACKWARD WITHOUT WARNING AS THE VALVETHE VEHICLE MAY DROP AND/OR MOVE FORWARD DISTANCE IN FRONT AND REAR OF THE VEHICLE.DO NOT CRAWL UNDER THE VEHICLE, KEEP A SAFE

could damage the valves.valves more than 4 and 1/2 turns. Turning the nuts more the jacks. DO NOT turn valve release nuts on the small IMPORTANT: Only open the valves enough to retract

assembly.

KEEP AWAY FROM THE WHEELS,

control panel will not retract the jacks for travel.

The solenoid valves on the power unit valve assembly areequipped with a manual valve release. Use the manual valve release for retracting only if the "AUTO STORE" button on the

NOTE: Assemblies can have different combinations of 5. Check that all four jacks are now retracted.

VALVE RELEASE CAM OPERATION

LARGE STYLE WITHVALVE RELEASE CAM

VALVE RELEASE NUTSMALL STYLE WITH

clockwise, or move the valve release cam to the closed

7. The system should now be repaired before using again.

IMPORTANT: Once the valve release nut is snug, DONOT tighten the valve release nut past this point as

6. Close the valves by turning the manual valve releases

internal damage may occur to the solenoid.

VALVE RELEASE NUTLARGE STYLE WITH

MANIFOLD

OPEN

VALVECLOSED

position.

CLOSE

WITH VALVERELEASE CAM

PLASTIC PLUG

BREATHERCAP

SMALL STYLE

OPENEDVALVE

4. Repeat the process for the rear jacks by opening the two

Cap. See the back page of this manual for further info.A 1/4" Nut Driver has been incorporated into the Breather

outer valves.

MAINTENANCE

MP44.001813NOV17

OIL LEVEL

ELECTRICAL SYSTEM

The batteries should be in good condition and fully charged.Weak batteries can cause erratic operation. Battery cable terminals and battery posts and connections should be kept

All electrical connections, especially ground connections, should be clean, tight, free from corrosion and protected

JACKS

There are very few user serviceable parts on the jacksThe jacks require very little maintenance. If the jacks are

VISUAL INSPECTION

Periodically inspect the system for oil leaks and damaged or missing parts, such as pivot bolts or springs.Check the hydraulic lines and wiring for damage and wear. Check that the jacks do not interfere with any parts of the vehicle when they are in the "STORE" position.

The system will operate better if kept clean and free from caked on mud or ice.

OPERATIONAL CHECK

Check that all lights work according to the "INDICATOR LIGHT" Section. Correct function of the red "WARNING"

Review the OPERATOR MANUAL. Run the system according to the SYSTEM OPERATION Section. Note any abnormal operation.

Review the "JACK RETRACTION" Section. Make sure the jacks will fully retract to the "STORE" position. Jacks should not interfere with any of the coach when in the "STORE"

clean.from weathering.

light is important.

position.

extremely dirty with caked on mud they should be washed.

If extremely dirty, the jack rods should NOT be wiped. The jack rods do not need to be oiled or sprayed with anything.

ROOM EXTENSIONS

The HWH room mechanisms need no maintenance.DO NOT grease or lubricate any parts of the HWHmechanism.

Any visible mechanism can be kept clean by washingwith water. Refer to the vehicle manufacturer forcorrect maintenance of the room seals.

See ML47149 for proper maintenance of all jacks.

cap before removing.

and steps should be fully retracted before checking fluid

breather cap. Clear any dirt away from the breather / fillerassembly. The oil level is checked and filled through thelevel. The oil reservoir is part of the pump / manifold

Any HWH hydraulic equipment, including jacks, slide-outs

servicing of the coach.All maintenance should be done as part of the normal

there is an oil leak in the system.purchased and then once every two years. More often if The oil level should be checked when the vehicle is first

should be between the bottom of the dipstick and thereservoir. Most breather caps have a dipstick. Fluid levelThe oil level should be within one inch of the top of the

emergency Dexron automatic transmission fluid can be used.Dexron automatic transmission fluid contains red dye

and can cause staining should a leak occur. DO NOT USEbrake fluid or hydraulic jack fluid. Use of these can damage

HWH Specialty Hydraulic Oil is recommended. In an

NOTE: Overfilling the tank can cause leakage of oil through the breather cap.

center mark.

FLUID:

NOTE:

seals.

MAINTENANCE

NOT IN PARK/BRAKE CHECK

Apply the brake so the coach cannot roll. Turn the ignitionto the "ACC" or "ON" position. Release the parking brake.

THE COACH WHEELS SECURELY SO THE COACH CANNOT ROLL FORWARD OR BACKWARD.

WARNING: WHEN MAKING THIS CHECK, BLOCK If any of the above checks or inspections reveal a problem or if there are other problems or questions, consult a qualified RV repair center, your vehicle or coach manufacturer, or HWH CORPORATION

22NOV16MP44.0502

Push the "AUTO LEVEL" button. The "NOT IN PARK/BRAKE" indicator light should come on while the "AUTOLEVEL" button is pushed. Release the "AUTO LEVEL"

for service or repair.

button and set the park brake. The leveling systemshould now function.

WINTER WEATHER DRIVING

have dried. This can facilitate corrosion of metalliccontinue to absorb moisture from the air even after theyAnti-icing / deicing agents when splashed on your vehicle,

components, such as HWH jacks.

To help reduce the corrosion of jacks after exposure to anti-icing / deicing agents, thoroughly wash jacks with warmsoapy water.

SENSING UNIT MAINTENANCE/SERVICE

SENSING UNIT ADJUSTMENT / WITHOUT ADJUSTING ENHANCEMENT

NOTE: If opposing LED’s are lit, there is a problem withthe Sensing Unit.

If LED (A) is lit: Tighten adjustment screw number 1until the LED is off.

If LED (C) is lit: Loosen adjustment screw number 1until the LED is off.

If LED (B) is lit: Loosen adjustment screw number 3until the LED is off.

until the LED is off.If LED (D) is lit: Tighten adjustment screw number 3

23OCT15MP44.1510

With the vehicle level according to the bubble level, if there are no yellow lights lit on the Touch Panel, the sensing unit is properly adjusted. If there are yellow LEVEL lights lit on the Touch Panel, manual adjustments to the Sensing Unit are needed. Tighten or loosen the adjustment screws according IMPORTANT: WHEN ALL 4 LED’S ARE OFF, MOVE THE

VEHICLE TO AN UNLEVEL POSITION SO ONE OR TWO YELLOW LIGHTS ARE ON. LEVEL THE VEHICLE ACCORDING TO THE YELLOW LEVEL LIGHTS. RECHECK THE LEVEL. IF MORE ADJUSTMENT IS NEEDED, DO NOT TRY TO ADJUST THE SENSING UNIT UNTIL THE YELLOW LEVEL LIGHTS GO OUT, INSTEAD

Example: After the initial adjustment and releveling the vehicle, the front is still low. This means the front yellow level light is turning off too soon. LED A is forthe front of the vehicle. Move the adjustment for thatlight very, very, slightly in the OPPOSITE direction thatis given in the above instructions for LED’s A, B, Cand D. This will allow the front yellow light to stayon slightly longer to bring the front up more. Again,unlevel the vehicle then relevel the vehicle usingthe yellow level lights on the touch panel. Recheckwith a level. Repeat the "tweaking" process until thesystem levels the vehicle properly.

SENSING UNIT ACCURACY TOLERANCE

The sensing unit has an accuracy tolerance of ± 5.4 inches front to rear and

INSTRUCTION SHEET

± 1 inch side to side on a 36 foot vehicle. Typical leveling results will be better.

to these instructions to adjust the sensing unit.

IMPORTANT: THE SENSING UNIT MOUNTING SPRINGSSHOULD BE COMPRESSED ABOUT 1/2 THEIR FREELENGTH. SCREW NUMBER 2 SHOULD NOT BE TURNED

MOUNTED BELOW

FRONT

MOUNTING SURFACE

(3) MOUNTING

(3) MOUNTING

SCREWS

SPRINGS

THISSIDEUP

JUST "TWEAK" THE SENSING UNIT, IGNORING THELED’S ON THE SENSING UNIT.

REMOTE MOUNTED "POTTED" ELECTRONIC SENSING UNIT

WHILE ADJUSTING THE SENSING UNIT. AFTERADJUSTING THE SENSING UNIT, BUMP THE SENSINGUNIT TO SEE THAT IT IS SETTLED TIGHT AGAINST ALLTHREE SCREW HEADS AND STILL INDICATES THATTHE UNIT IS LEVEL.

Level the vehicle by placing a bubble level in the center of the freezer floor or upon whichever surface within the vehicle that is to be level. It is best if the level is placed close to the mounting area of the sensing unit. Using the Leveling System and the bubble level, ignoring the yellow LEVEL lights on the Touch Panel, level the vehicle until the bubble is centered.

SENSING UNITBOTTOM VIEW OF

3

LEDC

LEDD

ALED

2

LED A - FRONT OF VEHICLELED B - LEFT SIDE OF VEHICLELED C - REAR OF VEHICLELED D - RIGHT SIDE OF VEHICLE

MOUNTING/ADJUSTMENTSCREWS (3)

YELLOW LEDs

1

LEDB

NOTE: OBSOLETE SENSING UNIT USED PRIORTO 2010.

SENSING UNIT MAINTENANCE/SERVICE

SENSING UNIT ADJUSTMENT / WITH ADJUSTING ENHANCEMENT

NOTE: If opposing LED’s are lit, there is a problem withthe Sensing Unit.

If LED (A) is lit: Tighten adjustment screw number 1until the LED is off.

If LED (C) is lit: Loosen adjustment screw number 1until the LED is off.

If LED (B) is lit: Loosen adjustment screw number 3until the LED is off.

until the LED is off.If LED (D) is lit: Tighten adjustment screw number 3

09NOV10MP44.1511

With the vehicle level according to the bubble level, if there are no yellow lights lit on the Touch Panel, the sensing unit is properly adjusted. If there are yellow LEVEL lights lit on the Touch Panel, manual adjustments to the Sensing Unit are needed.

SENSING UNIT ACCURACY TOLERANCE

The sensing unit has an accuracy tolerance of ± 5.4 inches front to rear and

INSTRUCTION SHEET

± 1 inch side to side on a 36 foot vehicle. Typical leveling results will be better.

IMPORTANT: THE SENSING UNIT MOUNTING SPRINGSSHOULD BE COMPRESSED ABOUT 1/2 THEIR FREELENGTH. SCREW NUMBER 2 SHOULD NOT BE TURNED

MOUNTED BELOW

FRONT

MOUNTING SURFACE

(3) MOUNTING

(3) MOUNTING

SCREWS

SPRINGS

THISSIDEUP

LED A - FRONT OF VEHICLELED B - LEFT SIDE OF VEHICLELED C - REAR OF VEHICLELED D - RIGHT SIDE OF VEHICLE

REMOTE MOUNTED "POTTED" ELECTRONIC SENSING UNIT

WHILE ADJUSTING THE SENSING UNIT. AFTERADJUSTING THE SENSING UNIT, BUMP THE SENSINGUNIT TO SEE THAT IT IS SETTLED TIGHT AGAINST ALLTHREE SCREW HEADS AND STILL INDICATES THATTHE UNIT IS LEVEL.

Level the vehicle by placing a bubble level in the center of the freezer floor or upon whichever surface within the vehicle that is to be level. It is best if the level is placed close to the mounting area of the sensing unit. Using the Leveling System and the bubble level, ignoring the yellow LEVEL lights on the Touch Panel, level the vehicle until the bubble is centered.

The ignition (motorized units) or master power switch (towableunits) must be on. Remove the "Adjusting Enhancement Cap".DO NOT LOSE THIS CAP. There is a small pin beneath thecap. Use a jumper wire with an alligator clip to apply a groundto the pin. This will make the sensing unit very sensitive. Theyellow lights may "jump" around while adjusting the sensing unit.Let the lights settle down after each adjustment. Small, gentleturns will work best. Turn mounting screws 1 and 3 to adjustthe sensing unit. Turn screws as instructed to turn out all theyellow LEDs. When all the LEDs are out, remove the jumperwire and replace the adjusting enhancement cap. DO NOTover tighten.

SENSING UNITBOTTOM VIEW OF

LED

3

D

CLED

LEDA

BYELLOW LEDs

2

MOUNTING/ADJUSTMENTSCREWS (3)

1

LED

Move the vehicle to an unlevel position and level thevehicle according to the yellow level sensing lights onthe touch panel. Readjust if necessary.

ADJUSTINGENHANCEMENTCAP

NOTE: BEFORE OPERATING MANUALVALVE RELEASE, READ AND UNDERSTANDPROCEDURE FOR MANUAL JACK RETRACTIONIN OPERATOR’S INSTRUCTIONS. VALVES MAY

HYDRAULIC LINE CONNECTION DIAGRAM

MP64.391701NOV11

(WITH 4 STRAIGHT-ACTING JACKS)

PUMP/MANIFOLDASSEMBLY

SHUTTLEVALVE

LEFTFRONT

RIGHTFRONT

RIGHTREAR

LEFTREAR

625/725 SERIES LEVELING SYSTEM

BREATHERCAP

VELOCITY VALVE

NOTE: SOMEMANIFOLDSARE EQUIPPEDWITH VELOCITYVALVES

LF RF

3000PSIPRESSURESWITCH

50PSIPRESSURESWITCH

RRLR

MANIFOLDS MAY HAVE FOUR (4) LARGEVALVES OR FOUR (4) SMALL VALVES

BE EQUIPPED WITH VALVE RELEASE NUTS ORRELEASE CAMS.

LARGE ANDSMALL VALVESWITH RELEASENUTS

LARGE ANDSMALL VALVESWITH RELEASE

CAMS

PRESSURE3000 PSIALTERNATE

SWITCHLOCATION

NOTE: Load center isnot shown, load centermay need to be removedto be removed to accessshuttle valve and shuttlevalve tube. PRESSURE

CHECK

HERE VALVES (4)CHECKOUTER

HYDRAULICPOWER UNIT

M

RELIEF VALVE

RETURN PRESSURE

SOLENOID MANIFOLDASSEMBLY

CHECK VALVE INNER

CHECK VALVEOUTER

SOL.VALVELR

SOL.VALVE SOL.VALVERFLF

PRESSURE/RETURNSHUTTLE VALVE

50 PSISWITCH

*JACKPRESSURESWITCH

JACKCYLINDER

LEFT REAR RIGHT REAR

RIGHTFRONT

LEFTFRONT

MP64.453029MAR10

*3000 PSISWITCH

LEVELING SYSTEM

ROOM EXTENSIONMANIFOLD LOCATED HEREWHEN APPLICABLE

RRSOL.VALVE

* USED ON AUTOMATIC SYSTEMS ONLY

NOTE: 50 PSI PRESSURE SWITCHMAY NOT BE USED ON ALL 625 MANIFOLDS.

3500 P.S.I.

BI-AXIS LEVELING WITH STRAIGHT-ACTING JACKS

625, 625S OR 725 SERIES

HYDRAULIC SCHEMATIC DIAGRAM

800 PSI TO SHIFT

MP84.311112APR18

TOUCH PANEL

LF RF

LR RR

AB B A

B A B A

62354000

4200 32006235

3000

62351000

1200 22006235

2000

WARNINGSWITCH

PRESSURE SWITCH

SWITCHWARNING

PRESSURE SWITCH

SWITCHWARNING

SWITCHPRESSURE

SWITCHWARNING

PRESSURESWITCH

UNDERSTAND OPERATOR’S MANUAL BEFORE USING. BLOCK FRAME AND TIRESSECURELY BEFORE REMOVING TIRES OR CRAWLING UNDER VEHICLE.


EXTEND

RETRACTAUTO

STORE

LEVELAUTO

WARNING!

BRAKE

TRAVEL

CANCEL MODE

PARK/NOT IN

EXCESS

R

SLOPE

MANUAL

RETRACT

EXTEND

SEE ELECTRICAL CONNECTION DIAGRAMLEVELING SYSTEM HYDRAULIC MANIFOLD

PUMP AND MASTER RELAYS

SEE ELECTRICAL CONNECTIONDIAGRAM - SENSING UNIT

DO

NO

T C

UT

TE

RM

INA

TIN

GR

ES

IST

OR

DO

NO

T C

UT

TE

RM

INA

TIN

GR

ES

IST

OR

MULTIPLEXED INPUT/OUTPUT MODULESEE ELECTRICAL CONNECTION DIAGRAM

81008101

FUSE15 AMP

PARK BRAKESWITCH

DIODEPARK BRAKELIGHT

9001 - TO

9000

NOTE: DIODE ARRANGEMENT MAY NOT BEPRESENT ON ALL INSTALLATIONS

TO +12V ACC.

SEE ELECTRICAL CONNECTION DIAGRAMMASTER WARNING LIGHT AND BUZZER

JACK WARNING SWITCHES, PRESSURE SWITCHES & PARK BRAKE

ELECTRICAL CONNECTION DIAGRAM

725 SERIES SINGLE STEP LEVELING SYSTEM

DIFFERENT

CONNECTOREXISTING

MAY BE

MP84.3170


MULTIPLEXED INPUT/OUTPUT MODULE - BLACK STRIKE CONNECTOR

12APR18

PIN # WIRECOLOR

WIRE NUMBER

WIRE DESCRIPTION AND FUNCTION

A1 - (+12 BLACK WIRE 8601) INPUT WHEN EXTENSION DEVICES ROOMS, GEN SLIDE, STEP COVER, ETC. ARE USED

LED AND WIRE/CONNECTION INFORMATION

CAN HIGH COMMUNICATION WIREYELLOWA2 N/ANO CONNECTIONA3 AND A4SWITCHED GROUND FROM RIGHT FRONT JACK WARNING SWITCH2000BLACKA5SWITCHED GROUND FROM RIGHT FRONT JACK PRESSURE SWITCHBLACKA6 2200SWITCHED GROUND FROM RIGHT REAR JACK PRESSURE SWITCHBLACKA7 3200SWITCHED GROUND FROM 50 PSI MANIFOLD PRESSURE SWITCH8101BLACKA8+12 VOLT POWER TO THE TOUCH PANELREDB1 6800CAN LOW COMMUNICATION WIREGREEN N/AB2GROUND TO THE TOUCH PANELWHITEB3 6230NO CONNECTIONB4SWITCHED GROUND FROM RIGHT REAR JACK WARNING SWITCHBLACKB5 3000SWITCHED GROUND FROM LEFT REAR JACK PRESSURE SWITCHBLACKB6 4200NO CONNECTIONB7SWITCHED GROUND FROM 3000 PSI MANIFOLD PRESSURE SWITCHBLACKB8 8100+12 VOLT POWER FOR LEVEL SENSING UNITC1 RED 6121SHIELD WIRE FOR GREEN & YELLOW CAN COMMUNICATION WIRESN/AC2 N/AGROUND FOR LEVEL SENSING UNITWHITEC3 6231SWITCHED GROUND FROM SENSING UNIT - REAR0400BLACKC4SWITCHED GROUND FROM LEFT REAR JACK WARNING SWITCH4000BLACKC5NO CONNECTIONC6 AND C7SWITCHED GROUND FROM SENSING UNIT - RIGHT SIDE0300BLACKC8

D1 RED 6120 +12 VOLT ACCESSORY POWER FOR I/O MODULEGROUND FOR JACK WARNING SWITCHESWHITED2 6235NO CONNECTIOND3SWITCHED GROUND FROM LEFT FRONT JACK WARNING SWITCH1000BLACKD4SWITCHED GROUND FROM LEFT FRONT JACK PRESSURE SWITCHBLACKD5 1200SWITCHED GROUND FROM SENSING UNIT - LEFT SIDE0100BLACKD6SWITCHED GROUND FROM SENSING UNIT - FRONTBLACKD7 0200GROUND FROM PARK BRAKE SWITCHBLACKD8 9000

RIGHT REAR JACKRIGHT FRONT JACK

LEFT FRONT JACKLEFT REAR JACK

LINK LIGHT

DUMP

TRAVELMASTER RELAY

PUMP RELAY

FRONT VIEWOF I/O

MODULECONNECTOR

A LIT RED LED INDICATES THERE SHOULD BE+12 VOLTS ON THE CORRESPONDING WIRE.

LINK LIGHT: LINK LIGHT FLASHING INDICATES PROPERCOMMUNICATION BETWEEN THE I/O MODULE AND THETOUCH PANEL. LINK LIGHT ON SOLID OR OFF INDICATESA FAILURE.

8 7 6 5 4 3 2 1ABCD

NOTE: DUMP AND TRAVEL LEDS PRESENTBUT NOT ALWAYS USED

GROUND STUD

MP84.3231


725 LEVELING SYSTEM HYDRAULIC LEVELING MANIFOLD

18FEB11

PUMP AND MASTER RELAYS

POWER UNITTOP VIEW

PUMP

RELAY (A)

RELAY (B)PUMP

P.E

.D

AB

AB

P.E

.D

BA

P.E

.D

AB

P.E

.D RR

RF

LF

LR

3000 LBPRESSURE

MOTOR

MASTER

SHOWN HERE BENEATH THEGROUND STUD IN MANIFOLD

PUMPMOTOR

PUMPRELAY (B)

+

MASTERRELAY (A)

40 AMPFUSE

SWITCH 8100 SEE DETAIL (A)MULTIPLEX I/O MODULE

50 LBPRESSURE

SWITCH

8101

85006230GROUNDRELAY

6800

DEUTSCH CONNECTOR

TO +12 VOLTBATTERY

8600

6230

TO GROUND STUDON PUMP (6230)

POWER UNITSIDE VIEW

GROUND STUD

(RELAY GROUND)

I/O MODULESEE DETAIL (A)

MULTIPLEX

SYSTEMSINGLE STEP LEVELINGDIAGRAM - 725 SERIES

SEE ELECTRICAL CONNECTION

LR

AB

RRLF RF

B A AB B A

6230

6230

4400

6230

2400

1400

6230

3400

DETAIL (A)

NOTE: PILOT AIR DUMPCONNECTION NOT USED


08JUN10


TOUCH PANEL CONNECTIONS

LINK LIGHT

PIN 1

UNDERSTAND OPERATOR’S MANUAL BEFORE USING. BLOCK FRAME AND TIRESSECURELY BEFORE REMOVING TIRES OR CRAWLING UNDER VEHICLE.


EXTEND

RETRACTAUTO

STORE

LEVELAUTO

WARNING!

BRAKE

TRAVEL

CANCEL MODE

PARK/NOT IN

EXCESS

R

SLOPE

MANUAL

RETRACT

EXTEND

YELLOWGREEN

WIRECOLOR

WHITE

5 PIN MTA CONNECTOR

345 RED

PIN #

21

68006230

NUMBERWIRE

+12 VOLTS FROM INPUT/OUTPUT MODULE

CAN SHIELDGROUND FROM CONTROL BOX

WIRE DESCRIPTION AND FUNCTION

CAN LOWCAN HIGH

MP84.3331

PIN 4 PIN 1

2

6

43

5

6 PIN UML CONNECTOR1

SWITCHED GROUND FOR MASTER WARNINGBLACK 7699

NO CONNECTIONNO CONNECTIONNO CONNECTIONNO CONNECTION

NO CONNECTION

MASTER WARNINGLIGHT/BUZZERCONNECTION

MP84.343010APR18

LEVEL SENSING UNIT


1236

54

SEE WIRELEGENDBELOW

SEEELECTRICALCONNECTION

DIAGRAMMULTIPLEXED

INPUT/OUTPUTMODULE

SEE ELECTRICAL CONNECTIONDIAGRAM - 725 SERIES

SINGLE STEPLEVELING SYSTEM

MOUNTING / ADJUSTMENTSCREWS (3)

A

BD

CYELLOW LEDS

BOTTOM VIEW OFSENSING UNIT

LED A - FRONT OF VEHICLELED B - LEFT SIDE OF VEHICLE (DRIVER SIDE)LED C - REAR OF VEHICLELED D - RIGHT SIDE OF VEHICLE (PASSENGER SIDE)

WIRE LEGEND -

PIN 1 - ORANGE - BLACK - 0400 - SWITCHED GROUND WHEN REAR IS LOWPIN 2 - WHITE - - - WHITE - 6231 - GROUND FROM SENSING UNITPIN 3 - RED - - - - - RED - 6121 - +12 VOLT FOR SENSING UNITPIN 4 - YELLOW - BLACK - 0100 - SWITCHED GROUND WHEN LEFT SIDE IS LOWPIN 5 - BLACK - - - BLACK - 0200 - SWITCHED GROUND WHEN FRONT IS LOWPIN 6 - GREEN - - BLACK - 0300 - SWITCHED GROUND WHEN RIGHT SIDE IS LOW

SEE WIRELEGENDBELOW1 4

563

2

SENSING UNIT PLUG

HARNESS PLUG

EXISTINGCONNECTOR

MAY BEDIFFERENT

CONNECT THIS END TO+12 VOLT IGNITION "ON" POWER

5-15 AMP FUSE

+ _

BUZZER

SEE TOUCH PANELCONNECTION INFORMATION

MASTER LIGHT/BUZZER CONNECTION DIAGRAM725 SERIES LEVELING SYSTEM

MP84.996403OCT11

A MASTER WARNING INDICATOR SHOULD ALWAYS BE USED. WHEN THE LEVELING SYSTEM HAS STRAIGHT-ACTING JACKS A WARNING BUZZER MUST BE USED.

NOTE: BY SUPPLYING IGNITION POWER TO THE WARNING BUZZER AND LIGHT, AND "ACC" POWER TO THE TOUCH PANEL, THE SYSTEM MAY BE OPERATED IN ACCESSORY WITHOUT THE BUZZER SOUNDING. THENEGATIVE SIGNAL FOR THE WARNING INDICATORS MUST ALWAYS COME FROM THE TOUCH PANEL.

PIGTAIL W/DIODEAND IN-LINE FUSE HOLDER - 6121

PIGTAIL PROVIDED - 7699

IGN

ITIO

N

61117699 6111 7699 7699

WARN LIGHTCONTROL CONTROL

BUZZER

LED DO NOT

POLARITYREVERSE

MASTERWARNING

LIGHT

MP84.999928FEB11

VALVE RELEASE NUT

NOTE: When opening the valve DO NOT turn the valve release nut more than 4 and 1/2 turns counter clockwise.

OIL LEVEL

1/4" NUT DRIVER

THE BREATHER CAP ISLOCATED ON THE TOP

TOP OF THE RESERVOIR. BEFORE RETURNING THE

BREATHER CAP TO THE RESERVOIR, REMOVE ANY

VALVE RELEASE NUT

counter clockwise. Damage to nut more than 2 full turns

NOTE: When opening the valve DO NOT turn the valve release

REMOVE TO GAINACCESS TO THE 1/4"VALVE RELEASE NUT

2 1/4" DIAMETER SOLENOID VALVE


GROOVES

SIDE OF THE POWER UNIT RESERVOIR

NOTE: The cam release may berotated in any direction on thevalve. DO NOT assume thatpushing down will open the


valve. Pushing the cam in the


the valve may result.

Damage to the valve mayFILL BETWEEN

SOLENOID VALVES WITH CAM RELEASE

wrong direction could damagethe valve.

NOTE: The cam release may berotated in any direction on thevalve. DO NOT assume thatpushing down will open the valve. Pushing the cam in the wrong direction could damagethe valve.

result.

a large style 12 volt valve with a large stylevalve with a small style 12 volt valve. Replace

considered when replacing any HWH hydraulicsolenoid valve. Replace a small style 12 volt

Valve size and voltage are still factors to be

replacements for all previous styles ofThe cam release style valves are direct

HWH hydraulic solenoid valves.

12 volt valve. This is true for 24 volt valvesalso.

turn out the old valve, confirm that no o-ring

stress on the wires at the point where they

the wires to the valve body to keep the wiresexit the valve body. Use a wire tie to secure

After installing the valve and without creating

Valve installation has not changed, simply

debris has been left in the manifold blockand turn in the new valve.

from being pinched beneath the cammechanism during operation.

WIRE TIE

WIRE TIE

HYDRAULIC SOLENOID VALVEINFORMATION INSERT

INDENTIFICATION - MANUAL OPERATIONS - REPLACEMENT

Manual retractVALVE OPENCAM RELEASE

CAM RELEASE

Default positionVALVE CLOSED

CAM RELEASE

Default positionVALVE CLOSED

position

CAM RELEASEVALVE OPEN

positionManual retract

REPLACEMENT VALVES MAY HAVE A VALVE RELEASE NUT OR RELEASE CAM

SOLENOID VALVES WITH 1/4" NUT RELEASE

1/4" NUT DRIVER, CLEAN ANY DEBRIS FROM THE

CAP, EITHER TO CHECK THE OIL LEVEL OR TO USE

IMPORTANT: PRIOR TO REMOVING THE BREATHER

INCLUDING DEBRIS INSIDE THE 1/4" NUT DRIVER.

PLASTIC PLUG:

PAINT CHIPS OR OTHER DEBRIS FROM THE DIPSTICK

Documents

· PDF fileWhen operating some leveling systems manually or operating the room extensions, the pump will turn off and back ... MANUAL JACK RETRACTION Section. The system